﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Kepp.Extend.Class
{
    /// <summary>
    /// 公共方法
    /// </summary>
    public class unpublics
    {
        /// <summary>
        /// 自然数
        /// </summary>
        /// <returns></returns>
        public int Number()
        {
            int number = 0;
            if (int.TryParse(Console.ReadLine(), out number)) return number;
            return Number();
        }
    }
}
